package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());

        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList != null && shoppingCartList.size() == 1) {
            ShoppingCart s = shoppingCartList.get(0);
            s.setNumber(s.getNumber() + 1);
            shoppingCartMapper.updateNumberById(s);
        } else {
            Long dishId = shoppingCart.getDishId();
            if (dishId != null) {
                Dish dish = dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            } else {
                Setmeal setmeal = setmealMapper.getById(shoppingCart.getSetmealId());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.add(shoppingCart);
        }
    }

    @Override
    public List<ShoppingCart> list() {
        return shoppingCartMapper.get();
    }

    @Override
    public void sub(ShoppingCartDTO shoppingCartDTO) {
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.get();
        log.info("s:{}", shoppingCarts);
        ShoppingCart s = new ShoppingCart();
        for (ShoppingCart shoppingCart : shoppingCarts) {
            Long setmealId = shoppingCart.getSetmealId();
            Long dishId = shoppingCart.getDishId();
            if (setmealId != null && setmealId.equals(shoppingCartDTO.getSetmealId())) {
                shoppingCart.setNumber(shoppingCart.getNumber() - 1);
                s = shoppingCart;
            }
            if (dishId != null && dishId.equals(shoppingCartDTO.getDishId())) {
                shoppingCart.setNumber(shoppingCart.getNumber() - 1);
                s = shoppingCart;
            }
            if (shoppingCart.getNumber() <= 0) {
                shoppingCartMapper.delete(shoppingCart);
            }
        }
        shoppingCartMapper.updateNumberById(s);
    }

    @Override
    public void clean() {
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.get();
        if (shoppingCarts != null) {
            for (ShoppingCart shoppingCart : shoppingCarts) {
                shoppingCartMapper.delete(shoppingCart);
            }
        }
    }
}